Horizontal Section No. 26 (1880). From Cardigan Bay over Cadr Idris. Geological Survey of GB. 2nd edition
Horizontal Section No. 26 (1880). From Cardigan Bay over Cadr Idris. Geological Survey of GB. 2nd edition. Located on Old Series one-inch maps 75se, 59ne, 60nw & sw. Hand coloured engraving 69.5 x102.5cm, 1:10,560 scale (6”= 1mile), flat. Bright colours (coloured 1923). Linen-taped edge, age-toned, library stamp on back. In very good condition.
About England & Wales Sections
These hand-coloured engraved ‘horizontal’ sections at six inch to one mile scale were published in the mid 19th century by the Geological Survey of England and Wales. The detailed profiles generally follow the geological dip on the one inch Old Series maps numbered in the upper right hand margin and the profile locations are shown on these maps which themselves did not include a section.